OpenPilot is an
all next-generation Open Source
UAV autopilot created by the OpenPilot Community (an all
volunteer non-profit community).

It is a highly capable
platform for multi-rotor craft, helicopters, as well as fixed wing
aircraft. It has been designed from the ground up by a community of
passionate developers from around the globe, with its core design
principles being quality, safety, and ease of use.

Simplicity does not come
with any compromises either: with no hard-coded settings, a complete
flight plan scripting language and other powerful features, OpenPilot
is an extremely capable UAV autopilot platform.

Flymaple is a Quadcopter controller board, based on the Maple Project.

The FlyMaple embeds a STM32F103RET6
(ARM Cortex-M3) as it's main MCU. It integrates a 3-Axis
accelerometer,a 3-Axis gyroscope,a 3-Axis compass and a barometric
pressure sensor.

By using the 10 dgrees
of freedom IMUs and powerful 72MHz high-performation microcontroller,
flymaple is powerful enough to handle a complex algorithm and manage a
robot motion system at the same time.

Paparazzi UAV (Unmanned
Aerial Vehicle) is an open-source drone hardware and software project
encompassing autopilot systems for multicopters/multirotors, fixedwing,
helicopters and hybrid aircraft. Paparazzi, being open, enables users
to add more features and improve the system. Using and improving
Paparazzi is encouraged by the community.

The Crazyflie Nano Quadcopter is a miniature quadcopter that fits in your hand.

It only weights about 19 grams and is 9 cm motor-to-motor.

Aside
from being fun to fly, it’s main purpose is to be a versatile
development platform that can be used to experiment, develop and
explore a lot of different areas of technology.

For
input a wide range of controllers can be used when connected to your
PC. There are also RC-controllers that you can connect directly to the
Crazyflie Nano Quadcopter. For more information on controllers have a
look at the controller page.

The Lisa/S chip is 4 square-centimeters (based on STM32)
— about the same size as a Euro coin. But this 1.9-gram sliver of
silicon includes everything you need to autopilot an aerial drone.It’s
the world’s smallest drone autopilot system — over 30 grams lighter
than its predecessor — according to the chip’s designers at the Delft
University of Technology in the Netherlands. And best of all, both the
hardware and the software is open source, meaning anyone can copy and
use it — for free.

The Lisa/S is the MAV Laboratory’s latest project.
The chip’s software is based on Paparazzi, an open source drone autopilot system that’s been around since 2003. The real innovation is the hardware.
The tiny chip packs in everything you need for an autopilot system,
including a gyroscope, accelerometer, altimeter, GPS, and an ARM
processor. The Lisa/S can be used with any type of drone, from quadcopters to fixed-wing systems, Remes says.